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8086
Object
Module
Formats
Version
4.8
The
SA
subfield
provides
information
for
memory
layout.
It
has
the
followinq
format:
**************************~******
* I I I I I , I *
* z I Z I Z I Z I Z I Z I S I A *
* I I I I , I I *
*********************************
Z's
indicates
that
these
I-bit
field
have
not
been
assigned
a
function.
These
bits
are
required
to
be
zero.
S
(shared)
is
a
I-bit
field
that.
if
1,
indicates
that
the
overlay
will
have
to
be
loaded
at
the
same
location
as
the
overlay
indicated
in
the
SHARED
OVERLAY
INDEX
field.
A
(adjacent)
is
a
I-bit
field
that,
if
1,
indicates
that
the
overlay
will
have
to
be
loaded
next
in
memory
to
the
overlay
indicated
in
the
ADJACENT
OVERLAY
INDEX
field.
The
SHARED
OVERLAY
INDEX
subfield,
present
if
bit
S
in
the
SA
subfield
is
1,
points
to
a
previously
defined
OVLDEF
record
and
indicates
that
the
segments
with
same
seqment
names
and
class
names
and/or
the
groups
with
same
names
in
the
two
overlays
must
be
loaded
at
the
same
location.
The
ADJACENT
OVERLAY
INDEX
subfield,
present
if
bit
A
in
the
SA
subfield
is
1,
points
to
a
previously
defined
OVLDEF
record
and
indicates
that
the
seqments
and/or
qroups
in
the
overlay
defined
by
the
current
OVLDEF
record
must
be
loaded
adjacent
to
the
ones
with
the
same
names
in
the
indicated
overlay.
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